i am not able to upload any settings.dat to my pagelines installation. This issue occurs on 2 different webservers and on any wp-installation (new installations without plugins). The error-logs dont have an entry according to this. We discussed it in the live chat and the moderator (i cannot remember her name) was able to import my .dat-file on her server - so the file itself is not the problem. I want to run my live-website with pagelines and therefore i need to import the settings from my sandbox-site. So i hope to solve the problem here in the forum.

I have made a new wp-installation to reproduce the issue - it is on www.neurofx.net/pagelines - please pm me for the login data. I hope you can find out the reason by uploading any settings.dat on this installation.

If one of our staff members were able to successfully install the theme settings file, this is most likely related to your servers configuration. Would it be possible for you to provide your servers php info as well as enable PageLines debug (Site Options > Advanced). Once you have provided this we will be able to investigate further.

Once last thing before we properly inspect your server setup, on the site you have exported the settings from, did the site have any custom CSS ?

If so, can you please remove the custom CSS and then export the theme settings again please and see if that file imports correctly. In the past some users who had a similar issue, had minor errors in their custom CSS, which caused the white screen.

hmm, OK, well at least we can rule that out. I will need to speak to one of our developers and see what could be the cause of this, it is most likely server related. I will report here when I have more information for you.

I'm afraid I'm not strong enough on php to be able to go through the link you've provided and spot any errors successfully. However, have you checked with the host that the Php memory limit is set to over 128mb in php.ini file? Or any alterations to the functions.php?

Unfortunately this is quite a common wordpress issue, this link might be able to help you track it down further and there's some solutions suggested there as well which could help-

It is not like my websites are on a crappy host It is a virtual server with 256MB php memory and a huge amount of php-apps can be installed per one click. So i hope, the most common sources of errors can be excluded.

At least i set the logging level of the webserver to E_ALL, debug in WP and Pagelines on - but still no message in the error logfile.

What could be the next step? My webhost says that they wont support third party applications.

I have made exactly the same Pagelines installation on a cheap webhost with 90MB php memory and other limitations - without the whitescreen issue.
So i asume that it must be a uncommon (maybe not the core) php setting which does not match which the Pagelines-Import function. All other reasons can be excluded so far.
The php configuration is here

I did not configure the VPS. The setup is provided by the host, which is also a leading host in germany. I cannot tell if it is a good setting or not because i have no experience in webhosting and php at all.

Btw, I have no doubt that Pagelines has been well tested ;-).

According to Your info i set temporarily the error reporting to 30719 - and for the first time i received a message in the error log: